Hydraulic snubber for grapple and method
CA 1298593 C · Owner: Esco Corporation · Inventors: Powell, Harold W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
OF DISCLOSURE:, A hydraulic snubber for a skidding grapple employing an internal piston, the piston having associated therewith a line type seal to prevent leakage of pressure fluid against a friction disc and wherein the passage providing pressure fluid to the piston is equipped with a special fitting to prevent overload.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.